CEREAL EXPERIMENTS AT JUDITH BASIN SUBSTATION. 21 
The spring-wheat varieties are sown at the rate of 4 pecks to the 
acre. The date of seeding has been governed by the climatic con- 
ditions. The best results are obtained from seeding as early as soil 
and weather conditions in the spring will permit. This date varies, 
of course, in different years. 
Varietal Experiments in Field Plats, 
annual results. 
The varietal testing of spring wheat was started in 1908, when 20 
varieties were grown. They were sown on ground that had been 
broken in 1907 and the seed bed was not in good tilth when the varie- 
ties were sown on May 5. The precipitation for June and July was 
below normal. As a result of the low precipitation and poor seed bed 
low yields were obtained from ail varieties. 
In 1909 the varieties were sown on well-prepared fallow ground. 
The seeding was not done until May 12. The precipitation that year 
was above normal and good yields were obtained from all varieties. 
In 1910 the varieties were sown on April 19. The precipitation 
was below normal; in fact, the seasonal precipitation for 1910 was the 
lowest recorded since the substation was established. The yields of 
all varieties were low, the average for the 23 varieties tested being 
11.4 bushels per acre. A surprising fact in this year was that the 
spring common wheats outyielded the durum varieties. This result 
was contrary to the general opinion that the durum varieties are more 
resistant to drought than the spring common wheats. Low yields of 
durum varieties were obtained at several of the field stations in the 
Great Plains in 1910. 
In 1911, because of a shortage of summer-fallowed land, the spring- 
wheat varieties were sown in twentieth-acre plats. The seeding was 
done April 20 in a well-prepared seed bed. The precipitation in May 
and June was about normal, but there, was only 0.5 inch of rain in 
July. This was followed by excessive rainfall in August, which came 
in time to benefit the spring wheats. The total for the month was 
6.34 inches. All varieties produced good yields and the quality of 
the grain was good. 
In 1912 the precipitation for June was nearly 2 inches below normal. 
This was accompanied by rather hot weather. The spring-wheat 
varieties were just beginning to head on July 12, when they were 
completely destroyed by a severe hailstorm. While most varieties 
made some second growth no grain was produced. 
A change was made in the method of testing the spring-wheat 
varieties in 1913. Instead of seeding them in single tenth-acre or 
twentieth-acre plats they were sown in fiftieth-acre plats and each 
variety replicated five times. Seeding was done on April 21 on well- 
prepared fallow ground. The crop that year was produced under 
normal conditions. 
